| MAI | Mycobacterium Avium-Intracellulare |
|---|---|
| MAC | MacConkey [broth]; major ambulatory category; malignancy-associated changes; maximum allowable conce... |
| MAI | microscopic aggregation index; movement assessment of infants; multilevel assessment instrument; Myc... |
| Mt | megatonne; Mycobacterium tuberculosis |
| Mtb | Mycobacterium tuberculosis |